Our Hot Products
Meet Your Industrial Needs
Black Rectangular Steel Tube
Q355 Black Rectangular Steel Tube is produced from high-strength Q355 structural steel, offering excellent mechanical properties, higher load-bearing capacity, and superior durability. Manufactured with advanced welding technology, it provides reliable strength and dimensional accuracy for demanding applications. This rectangular hollow section is widely used in heavy construction, industrial structures, engineering projects, steel frameworks, bridges, and infrastructure applications. Customized specifications and sizes are available to meet different project requirements.
Q355 Black Rectangular Steel Tube
Q355 Black Rectangular Steel Tube is produced from high-strength Q355 structural steel, offering excellent mechanical properties, higher load-bearing capacity, and superior durability. Manufactured with advanced welding technology, it provides reliable strength and dimensional accuracy for demanding applications. This rectangular hollow section is widely used in heavy construction, industrial structures, engineering projects, steel frameworks, bridges, and infrastructure applications. Customized specifications and sizes are available to meet different project requirements.
Q235 Black Square Steel Tube
Q235 Black Square Steel Tube is manufactured from Q235 carbon structural steel through advanced welding technology. It features good weldability, stable mechanical properties, and reliable structural performance. With a smooth black surface and accurate dimensions, it is widely used in construction frameworks, steel structures, fencing, greenhouse structures, machinery supports, and general fabrication projects. Different sizes, wall thicknesses, lengths, and production standards can be customized according to customer requirements.
Black Spiral Welded Steel Pipe
Black Spiral Welded Steel Pipe is manufactured from carbon steel coils through SSAW welding process without additional surface coating. It provides high strength, good weldability, and cost-effective performance for various applications. This black spiral steel pipe is widely used in construction, water transportation, structural engineering, piling projects, and industrial pipeline systems. Available in different sizes, wall thicknesses, and international standards to meet diverse customer requirements.
Large Diameter Galvanized Steel Pipe
Large Diameter Galvanized Steel Pipe is designed for applications requiring large pipe diameters, high strength, and excellent corrosion resistance. Manufactured from quality carbon steel with a durable zinc coating, it provides reliable performance in harsh environments and long-term outdoor applications. It is widely used in water transmission systems, infrastructure construction, industrial pipelines, structural engineering, and large-scale projects. Available in various diameters, wall thicknesses, and international standards, it meets the requirements of different global markets.
Thin Wall Galvanized Steel Tube
Thin Wall Galvanized Steel Tube is a lightweight steel tube with a galvanized surface that provides good corrosion protection and attractive appearance. It combines easy processing, convenient installation, and cost efficiency while maintaining sufficient strength for light structural applications. It is commonly used in furniture production, decoration projects, greenhouse structures, electrical conduit systems, indoor frameworks, and light engineering applications. Different sizes, shapes, and surface finishes can be customized according to customer specifications.
Thick Wall Galvanized Steel Pipe
Thick Wall Galvanized Steel Pipe features increased wall thickness and a strong zinc protective coating, providing excellent mechanical strength, impact resistance, and long service life. It is designed for applications requiring higher pressure resistance and structural stability. This type of galvanized steel pipe is widely used in heavy construction, steel frameworks, support structures, industrial pipelines, machinery manufacturing, and large-scale engineering projects. Various diameters, thicknesses, and galvanized coating options are available to satisfy different project requirements.
Q355 Galvanized Steel Pipe
Q355 Galvanized Steel Pipe is manufactured from high-strength Q355 structural steel and protected with a galvanized zinc coating for improved corrosion resistance. It offers higher strength, better load-bearing capacity, and excellent durability compared with standard carbon steel pipes. This product is widely used in heavy-duty construction, steel structures, engineering projects, industrial frameworks, bridges, and infrastructure applications. With advanced production technology and strict quality control, Q355 galvanized steel pipe provides reliable performance for long-term outdoor and structural use.
Q235 Galvanized Round Steel Pipe
Q235 Galvanized Round Steel Pipe is made from Q235 carbon structural steel with a zinc coating applied through galvanizing technology. It provides good weldability, stable mechanical properties, and excellent resistance to rust and weather conditions. This galvanized round pipe is widely used in construction projects, scaffolding systems, fences, handrails, greenhouse frameworks, agricultural structures, and general steel fabrication. Available in different diameters, wall thicknesses, and lengths, it is an economical and reliable choice for various structural applications.
About Us
Company Introduction
Tianjin Shengtian Yonghong Steel Co., Ltd. (STYH Steel)
Premium ERW Steel Pipe Manufacturer & Structural Steel Supplier from China
Tianjin Shengtian Yonghong Steel Co., Ltd. (STYH Steel) is a premier manufacturer and exporter specializing in high-quality steel solutions from China. Backed by over a decade of industry expertise, STYH Steel operates a state-of-the-art 30,000 m² steel manufacturing facility in Tianjin. Our infrastructure features five advanced high-frequency welded (ERW) steel pipe production lines, delivering a robust annual capacity of 100,000 tons to global markets.
Our Core Steel Products Portfolio
As a trusted global steel supplier, our extensive product catalog includes:
· Welded Steel Pipes: Self-produced round, square, and rectangular welded steel pipes available in carbon steel, hot-dipped galvanized (HDG), and pre-galvanized finishes.
· Structural Steel Materials: A full range of section steels including U/C channels, steel angles, I/H beams, and flat bars.
· Steel Rods & Rebars: High-tensile steel wire rods and construction rebars.
· Steel Coils: Premium Hot Rolled Coils (HRC), Cold Rolled Coils (CRC), Galvanized Iron (GI) coils, and Prepainted Galvanized Iron (PPGI) coils.
Custom Steel Processing & Global Applications
To satisfy precise project specifications, STYH Steel provides advanced steel deep processing services, including bending, swaging, beveling, threading, and precision laser cutting. Our steel products are widely utilized in global fluid transportation, commercial and industrial construction, scaffolding systems, and agricultural greenhouse projects.
Reliable Export Logistics & Global Supply Chain
Driven by a professional production, warehousing, and shipping team, STYH Steel strictly adheres to international manufacturing standards and maritime loading protocols. We guarantee secure packaging and optimal stowing suitable for long-distance ocean freight and global transit. Over the past decade, our commitment to quality has earned wide acclaim from international clients across diverse countries and regions. Partner with STYH Steel today for reliable, long-term, and factory-direct steel wholesale solutions.
Projects
Successful Projects
The products are widely utilized in fields such as infrastructure construction, greenhouses, transportation facilities, water supply and drainage systems, steel structures, and mechanical manufacturing.
Manufacturing
Manufacturing Excellence
News
News Article
![Turkish Customer Visits Our Office and Steel Pipe Factory for Business Exchange]( "Turkish Customer Visits Our Office and Steel Pipe Factory for Business Exchange")
2026-07-15Turkish Customer Visits Our Office and Steel Pipe Factory for Business ExchangeLearn More →
![Polish Customers Visit Our Steel Pipe Factory for Business Cooperation]( "Polish Customers Visit Our Steel Pipe Factory for Business Cooperation")
2026-07-04Polish Customers Visit Our Steel Pipe Factory for Business CooperationLearn More →
![STYH Steel Welcomes Overseas Clients for Product Inspection and Strategic Cooperation Discussions]( "STYH Steel Welcomes Overseas Clients for Product Inspection and Strategic Cooperation Discussions")
2026-06-16STYH Steel Welcomes Overseas Clients for Product Inspection and Strategic Cooperation DiscussionsLearn More →
